Acrylic Resin vs Epoxy Resin
Updated: 2026
Acrylic Resin vs Epoxy Resin for Coatings: How to Choose the Right Crosslinker
Quick Answer: Acrylic resin and epoxy resin are binder systems used in coating formulation, but the crosslinker choice depends on the application: hydroxyl acrylic systems often use polyisocyanate hardeners, while 1K baking systems can use blocked isocyanates such as DXB-3370G with 70±2% solids, 7.5±0.5% valid NCO and 80–100°C deblocking temperature.
Acrylic resin and epoxy resin are often compared because both can be used to build coating films, improve surface protection and adjust performance. For a coating manufacturer, however, the more practical question is not simply "Which resin is better?" The key question is: Which resin system, curing route and crosslinker match your substrate, drying condition, durability requirement and production process?
Dongsen supplies coating raw materials such as aromatic polyisocyanates, aliphatic polyisocyanates, solvent-based blocked polyisocyanates, water-based blocked polyisocyanates, moisture curing polyisocyanates, waterbased polyisocyanates and polyisocyanate hardeners for shoe-sole adhesives. Dongsen does not supply finished paints, epoxy coatings, wall paints, nitrocellulose, alkyd resin or polyester resin. In this article, acrylic and epoxy resin are discussed as formulation backgrounds, while Dongsen recommendations focus on suitable crosslinker directions.
Need a Crosslinker for Acrylic, PU or Baking Coating Systems?
Share your resin type, OH value or functional group, substrate, baking temperature, target hardness/flexibility and estimated monthly demand. Dongsen can help you screen a suitable polyisocyanate, blocked isocyanate or waterbased isocyanate direction.
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What Is the Real Difference Between Acrylic Resin and Epoxy Resin?
Acrylic resin is commonly selected when formulators need color retention, weatherability, gloss control, fast drying or compatibility with different solventborne and waterborne coating systems. Hydroxyl-functional acrylic resins can be crosslinked with isocyanate hardeners to formulate 2K PU coatings for wood, furniture, automotive refinish, plastic and selected industrial applications.
Epoxy resin is commonly selected when formulators need adhesion, chemical resistance and corrosion protection. Epoxy systems usually depend on epoxy-functional resin chemistry and specific curing agents. This article does not recommend Dongsen as an epoxy coating supplier; epoxy resin is only used here as a comparison point for coating manufacturers deciding between resin platforms.
The practical difference is that acrylic systems often need a crosslinker that balances drying, hardness, gloss, flexibility and yellowing resistance, while epoxy systems are usually selected for adhesion and chemical protection. If your production line uses hydroxyl acrylic, polyester-OH, PUD or 1K baking chemistry, the crosslinker choice becomes the main performance lever.
When Should a Formulator Choose an Acrylic-Based PU System?
An acrylic-based PU system is usually a better direction when the coating requires gloss retention, fast surface development, clean appearance and adjustable hardness. In solventborne 2K PU systems, hydroxyl acrylic resin can react with polyisocyanate hardeners. In waterborne systems, PUD or acrylic dispersion may need a water-dispersible polyisocyanate to raise chemical resistance, film hardness and early block resistance.
For indoor wood and furniture coatings, aromatic TDI-based hardeners can give fast drying and high hardness. For automotive refinish or exterior-exposed systems, aliphatic HDI-based hardeners are usually preferred because non-yellowing performance is more important. For 1K baking coatings, blocked isocyanates allow the formulation to remain stable before heat activation.
When Is an Epoxy Resin System Not the Right Direction for Dongsen Inquiry?
An epoxy resin system is not the right Dongsen inquiry direction if you are looking for epoxy resin, epoxy coating, epoxy floor paint or a complete epoxy paint package. Dongsen does not position this page as an epoxy product offer.
If your project is mainly epoxy floor coating or wall paint, it is outside Dongsen's current priority direction. If your project involves PU floor coating, PU wood coating, automotive refinish, can and coil baking systems, flexible packaging adhesives or waterborne PU crosslinking, Dongsen crosslinker options may be relevant.
Which Dongsen Crosslinker Direction Fits Acrylic Resin Systems?
The table below turns the acrylic resin vs epoxy resin comparison into a practical grade-selection map. All values are typical reference data and subject to the current TDS/COA.
| Formulation direction | Typical buyer need | Dongsen direction | Example grade | Typical data | Best-fit use case |
|---|---|---|---|---|---|
| Hydroxyl acrylic 2K PU | High hardness, gloss, indoor wood finish | Aromatic polyisocyanate | HDX-960E | 51±2% solids; NCO 7.2±0.5%; viscosity 110±50 cps | 2K PU wood and furniture coatings using acrylic compatibility |
| Hydroxyl acrylic 2K PU | Matte or gloss finish adjustment | Aromatic polyisocyanate | HDX-H55 / HDX-H77 | 51±2% solids; NCO 7.1±0.5%; viscosity 150±75 cps / 100±50 cps | Matt finish or gloss finish wood PU systems |
| Exterior or automotive acrylic PU | Non-yellowing and weathering resistance | Aliphatic polyisocyanate | HDX-175MPX | 75±1% solids; NCO 16.5±0.5%; viscosity 210±90 cps | Clear coat, automotive refinish and durable PU coatings |
| High hardness aliphatic PU | Faster dry and higher crosslink density | HDI trimer | HDX-190 / HDX-100 | HDX-190: 90±1% solids, NCO 19.8±0.5%; HDX-100: 100% solids, NCO 22.0±0.5% | High-hardness, non-yellowing solventborne PU systems |
| 1K baking acrylic system | Heat-activated crosslinking and storage stability | Solvent-based blocked isocyanate | DXB-3370G | 70±2% solids; valid NCO 7.5±0.5%; viscosity 2000±1000 cps; deblock 80–100°C | Low-temperature baking systems, can and coil or flexible packaging adhesive direction |
| 1K baking acrylic or polyester-OH system | Medium baking window and chemical resistance | Solvent-based blocked isocyanate | DXB-3375D | 75±2% solids; valid NCO 11.2±0.5%; viscosity 2500±1000 cps; deblock 130–140°C | Industrial baking coatings and crosslinking applications |
| Waterborne acrylic / PUD | Low-VOC crosslinking and film property upgrade | Waterbased polyisocyanate | WD-8780 / WD-8980 | 80.0±2.0% solids; NCO 15.0±1%; viscosity 300±200 cps | Waterborne wood, industrial and selected PU floor systems |
Takeaway: For acrylic-compatible 2K PU wood coating, HDX-960E is a practical starting point because it combines 51±2% solids, 7.2±0.5% NCO and low viscosity of 110±50 cps. For heat-activated 1K systems, DXB-3370G fits lower bake windows at 80–100°C, while DXB-3375D fits 130–140°C baking conditions.
How Should Buyers Compare Acrylic, Epoxy and PU Crosslinking Routes?
| Selection point | Acrylic resin system | Epoxy resin system | PU / isocyanate implication |
|---|---|---|---|
| Typical strength | Gloss, weatherability, color retention, formulation flexibility | Adhesion, chemical resistance, corrosion protection | Use a polyisocyanate hardener when the acrylic has suitable OH functionality |
| Common curing route | Thermoplastic drying, 2K PU, amino or blocked-isocyanate baking | Epoxy reaction with matched curing agents | Ask for NCO %, solids, viscosity, free monomer and compatibility data |
| Best Dongsen fit | Hydroxyl acrylic PU, waterborne acrylic/PUD, 1K baking acrylic | Only if the buyer also has PU or blocked-isocyanate needs | Dongsen supports crosslinker selection, not finished epoxy coating |
| Main risk | Wrong hardener can hurt pot life, gloss, hardness or compatibility | Wrong curing chemistry can cause incomplete cure or poor film balance | Pre-test compatibility, water content, NCO/OH ratio and bake schedule |
Takeaway: Acrylic resin and epoxy resin are binder choices, but Dongsen's strongest inquiry path is the crosslinker decision: 2K PU hardener, waterbased polyisocyanate or blocked isocyanate for a defined baking schedule.
Which Dongsen Grade Should You Shortlist for Your System?
Match the grade to chemistry and process: for blocked isocyanates the bake temperature is decisive, while for 2K systems the NCO/OH ratio, pot life and final hardness target should be confirmed before scale-up. If your resin partner is hydroxyl acrylic, ask for a TDS comparison of HDX-960E, HDX-H55 or HDX-H77 for indoor wood PU systems. If your coating requires non-yellowing performance, ask for HDX-175MPX, HDX-190 or HDX-100. If your line uses 1K baking, ask whether DXB-3370G (80–100°C), DXB-3375D (130–140°C) or DXB-3375E (150°C) matches your oven condition.
Related Dongsen Solutions for Acrylic-Based Coating Formulators
Use the links below to move from resin comparison into actual crosslinker selection:
- Polyisocyanate crosslinkers and curing agents for PU coatings
- Aliphatic polyisocyanate hardeners for non-yellowing PU coatings
- Solvent-based blocked isocyanates for 1K baking systems
- Waterbased isocyanate crosslinkers for waterborne PU systems
- Wood and furniture PU coating applications
- Automotive OEM and refinish coating applications
- Can and coil coating crosslinker applications
For more formulation background, review related articles such as waterborne polyisocyanate hardeners for 2K PU coatings, TDI trimer hardeners for indoor wood coating and how to choose a fast-drying PU hardener for wood coatings.
Key Takeaways for Acrylic Resin vs Epoxy Resin Selection
- Acrylic resin is often selected for gloss, weatherability and formulation flexibility; epoxy resin is often selected for adhesion and chemical resistance.
- Dongsen does not supply finished paints or epoxy coatings; this page guides coating manufacturers toward relevant crosslinker choices.
- HDX-960E is a useful acrylic-compatible TDI trimer direction for indoor 2K PU wood systems, with 51±2% solids and 7.2±0.5% NCO.
- HDI-based options such as HDX-175MPX, HDX-190 and HDX-100 are more suitable when non-yellowing performance is required.
- Blocked isocyanates such as DXB-3370G and DXB-3375D should be selected according to the baking temperature window.
Ask Dongsen for a Crosslinker Recommendation
Send your resin TDS, application, substrate, drying or baking condition and target film properties. Dongsen will help you compare suitable polyisocyanate, blocked isocyanate or waterbased isocyanate directions before sample testing.
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Send Your Coating Requirement
✅ Resin type and OH value or functional group
✅ Application: wood, automotive refinish, can and coil, flexible packaging adhesive or waterborne PU
✅ Drying condition or baking temperature
✅ Target hardness, flexibility, gloss, yellowing resistance and chemical resistance
✅ Estimated quantity, country and requested documents
FAQ
Is acrylic resin better than epoxy resin for coatings?
Acrylic resin is not always better than epoxy resin; it is usually better when gloss retention, weatherability and appearance are priorities, while epoxy resin is often chosen for adhesion and chemical resistance.
Does Dongsen sell acrylic resin or epoxy resin?
Dongsen does not position this article as an acrylic resin or epoxy resin sales page. Dongsen focuses on coating crosslinkers such as polyisocyanate hardeners, blocked isocyanates, moisture curing polyisocyanates and waterbased polyisocyanates.
Which Dongsen grade fits hydroxyl acrylic 2K PU wood coatings?
HDX-960E can be a starting point for hydroxyl acrylic 2K PU wood coatings because it is a TDI trimer with 51±2% solids, 7.2±0.5% NCO and 110±50 cps viscosity. Final selection must be confirmed by TDS, COA and formulation testing.
Which crosslinker should I choose for non-yellowing acrylic PU coatings?
Non-yellowing acrylic PU coatings usually need aliphatic HDI-based polyisocyanates such as HDX-175MPX, HDX-190 or HDX-100, depending on flexibility, hardness, solid content and viscosity requirements.
What blocked isocyanate should I use for a low-temperature baking system?
DXB-3370G is a low-temperature blocked HDI trimer direction with 70±2% solids, 7.5±0.5% valid NCO and 80–100°C deblocking temperature. Always match the grade with your oven profile and resin system.
Can Dongsen help if my current formulation is epoxy-based?
Dongsen can only help if the project also involves PU, blocked-isocyanate or waterbased crosslinking needs. If the requirement is purely epoxy resin, epoxy hardener or finished epoxy coating, it is outside Dongsen's product scope.
What documents should I request before testing?
Request the current TDS, MSDS/SDS and COA for the exact grade. For production trials, also confirm solid content, NCO value, viscosity, free monomer, solvent carrier, storage condition and recommended compatibility testing.